19876340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{541}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 45892224

約数和(自身を除く): 26015884

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 167, 220, 334, 541, 668, 835, 1082, 1670, 1837, 2164, 2705, 3340, 3674, 5410, 5951, 7348, 9185, 10820, 11902, 18370, 23804, 29755, 36740, 59510, 90347, 119020, 180694, 361388, 451735, 903470, 993817, 1806940, 1987634, 3975268, 4969085, 9938170, 19876340]

約数ペア:

[(1, 19876340), (2, 9938170), (4, 4969085), (5, 3975268), (10, 1987634), (11, 1806940), (20, 993817), (22, 903470), (44, 451735), (55, 361388), (110, 180694), (167, 119020), (220, 90347), (334, 59510), (541, 36740), (668, 29755), (835, 23804), (1082, 18370), (1670, 11902), (1837, 10820), (2164, 9185), (2705, 7348), (3340, 5951), (3674, 5410)]